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Strength and Balance Guided Posture Selection during a Battery Maintenance Task
Technical Paper
2006-01-0698
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Posture selection during standing exertions is a complex process involving tradeoffs between muscle strength and balance. Bodyweight utilization reduces the amount of upper-body strength required to perform a high force push/pull exertion but shifts the center-of-gravity towards the limits of the functional stability region. Thus balance constraints limit the extent to which bodyweight can be used to generate push/pull forces. This paper examines a two-handed sagittal plane pulling exertion performed during a battery maintenance task on a member of the family of medium-sized tactical vehicles (FMTV). Percent capable strength predictions and functional balance capabilities were determined for various two-handed pulling postures using the University of Michigan's 3D Static Strength Prediction Program (3DSSPP). Through this simulation study, preferred postures that minimize joint torques while maintaining balance were identified. Such preferred postures are important in redesigning the vehicle for improved maintenance.
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Authors
Citation
Hoffman, S., Chaffin, D., and Wagner, D., "Strength and Balance Guided Posture Selection during a Battery Maintenance Task," SAE Technical Paper 2006-01-0698, 2006, https://doi.org/10.4271/2006-01-0698.Also In
References
- Center for Ergonomics Three Dimensional Static Strength Prediction Program (3DSSPP) V 5.0.3 The University of Michigan Ann Arbor, MI 2005
- National Health and Survey Nutrition Examination Data (NHANES III) Hyattsville, MD U.S. Department of Health & Human Services, Centers for Disease Control & Prevention 1988-1994 http://www.cdc.gov/nchs/about/major/nhanes/datalink.htm#NHANESIII
- Chaffin, D.B. Anderson, G.B.J. Martin, B.J. 1999 Occupational Biomechanics 3rd J. Wiley & Sons New York, NY
- Chaffin, D.B. Andres, R.O. Garg, A. 1983 “Volitional postures during maximal push/pull exertions in the sagittal plane,” Human Factors 25 5 541 550
- Chaffin, D.B. Herrin, G.D. Keyserling, W.M. 1978 “Pre-employment strength testing - updated position,” Journal of Occupational & Environmental Medicine 20 6 403 408
- Dempster, W.T. 1958 “Analysis of two-handed pulls using free body diagrams,” Journal of Applied Physiology 13 3 469 480
- Gaughran, G.R.L. Dempster, W.T. 1956 “Force analysis of horizontal two-handed pushes and pulls in the sagittal plane,” Human Biology 28 1 67 92
- Holbein, M.A. Chaffin, D.B. 1997 “Stability limits in extreme postures: effects of load positioning, foot placement, and strength,” Human Factors 39 3 456 468
- Hoozemans, M.J.M. van der Beek, A.J. et al 1998 “Pushing and pulling in relation to musculoskeletal disorders: a review of risk factors,” Ergonomics 41 6 757 781
- Kumar, S. Narayan, Y. Bacchus, C. 1995 “Symmetric and asymmetric two-handed pull-push strength of young adults,” Human Factors 37 4 854 865
- Mital, A. Das, B. 1987 “Human strengths and occupational safety,” Clinical Biomechanics 2 97 106
- Rider, K.A. Chaffin, D.B. Foulke, J.A. Nebel, K.J. 2004 “Analysis and redesign of battery handling using Jack™ and HUMOSIM motions,” SAE Technical Paper 2004-01-2145 Warrendale, PA
- Waters, T.R. Putz-Anderson, V. Garg, A. Fine, L.J. 1993 “Revised NIOSH Equation for the Design and Evaluation of Manual Lifting Tasks,” Ergonomics 36 7 749 776